I’ve been using OS X for a while now, and one thing that really irks me, especially on larger DMG files like a Leopard image, is that OS X automatically tries to verify the checksum of the DMG image file, which could take hours.

There are a few applications out there that will disable this for you, but if you want the quick and dirty method, and don’t mind using the Terminal once in a while, use this one-liner to disable the verification easily:

defaults write com.apple.frameworks.diskimages skip-verify true